mbtk/libmbtk_lib/http/mbtk_http.c

/*************************************************************
Description:
    MBTK HTTP c file.
Author:
    LiuBin
Date:
    2020/4/30 13:51:42
*************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>

#include "mbtk_http_base.h"
#include "mbtk_http.h"
#include "mbtk_http_chunks.h"

/*************************************************************
    Constants and Macros
*************************************************************/

/*************************************************************
    Variables:local
*************************************************************/
static mbtk_http_handle_t http_handles[HTTP_HANDLE_MAX] =
{
    {
        .id = -1,
        .data_cb = NULL,
        .session_cnt = 0,
        .session = {NULL}
    }
};

/*************************************************************
    Variables:public
*************************************************************/


/*************************************************************
    Local Function Declaration
*************************************************************/


/*************************************************************
    Local Function Definitions
*************************************************************/
static void http_session_free(mbtk_http_session_t *session)
{
    if(session)
    {
        if(session->req.header_cnt > 0)
        {
            int index;
            for(index = 0; index < HTTP_REQUEST_HEADER_MAX; index++)
            {
                if(session->req.req_h[index] != NULL)
                {
                    if(session->req.req_h[index]->value)
                        free(session->req.req_h[index]->value);
                    free(session->req.req_h[index]);
                    session->req.req_h[index] = NULL;
                }
            }
            session->req.header_cnt = 0;
        }

        if(session->req.content)
        {
            free(session->req.content);
            session->req.content = NULL;
        }

        if(session->rsp.header_cnt > 0)
        {
            int index;
            for(index = 0; index < HTTP_REQUEST_HEADER_MAX; index++)
            {
                if(session->rsp.rsp_h[index] != NULL)
                {
                    if(session->rsp.rsp_h[index]->value)
                        free(session->rsp.rsp_h[index]->value);
                    free(session->rsp.rsp_h[index]);
                    session->rsp.rsp_h[index] = NULL;
                }
            }
            session->rsp.header_cnt = 0;
        }

        free(session);
    }
}

static int http_session_close(mbtk_http_session_t *session)
{
    if(session)
    {
        if(session->sock_fd > 0)
        {
            if(mbtk_http_close(session->sock_fd))
            {
                LOGE("mbtk_http_close() fail.");
                return -1;
            }
            session->sock_fd = -1;
        }

        session->state = HTTP_SESSION_STATE_NON;

        return 0;
    }

    return -1;
}


static bool http_handle_check(int handle_id)
{
    if(handle_id < 0 || handle_id >= HTTP_HANDLE_MAX
       || http_handles[handle_id].id < 0)
    {
        return FALSE;
    }

    return TRUE;
}

static bool http_session_check(int handle_id, int session_id)
{
    if(handle_id < 0 || handle_id >= HTTP_HANDLE_MAX
       || http_handles[handle_id].id < 0
       || http_handles[handle_id].id != handle_id)
    {
        return FALSE;
    }

    if(session_id < 0 || session_id >= HTTP_SESSION_MAX
       || http_handles[handle_id].session[session_id] == NULL
       || http_handles[handle_id].session[session_id]->id != session_id)
    {
        return FALSE;
    }

    return TRUE;
}

static bool http_is_space_char(char ch)
{
    if(ch == ' ' || ch == '\r' || ch == '\t' || ch == '\n')
        return TRUE;

    return FALSE;
}

static bool http_str_empty(char *str)
{
    if(str == NULL || strlen(str) == 0)
        return TRUE;

    return FALSE;
}


static int http_url_parse
(
    void* url,
    void *host,
    void *uri,
    int *port,
    bool *is_ssl
)
{
    if(strlen(url) == 0)
    {
        return -1;
    }
    char *url_ptr = (char*)url;
    char *host_ptr = (char*)host;

    LOGI("URL[%d]:%s",strlen(url_ptr),url_ptr);

    if(!memcmp(url_ptr,"https://",8))
    {
        *is_ssl = TRUE;
        url_ptr += 8;
    }
    else if(!memcmp(url_ptr,"http://",7))
    {
        *is_ssl = FALSE;
        url_ptr += 7;
    }
    else
    {
        *is_ssl = FALSE;
    }

    // ptr point to host.
    while(*url_ptr)
    {
        if(*url_ptr == ':' || *url_ptr == '/') // Host end
            break;
        if(http_is_space_char(*url_ptr))
        {
            url_ptr++;
            continue;
        }
        *host_ptr++ = *url_ptr++;
    }

    // "www.baidu.com"
    if(*url_ptr == '\0')   // No port and uri
    {
        if(*is_ssl)
        {
            *port = MBTK_HTTPS_PORT_DEF;
        }
        else
        {
            *port = MBTK_HTTP_PORT_DEF;
        }
        memcpy(uri,"/",1);

        LOGI("HTTP parse success:'%s','%s', %d, %d",(char*)host,(char*)uri,*port,*is_ssl);
        return 0;
    }
    else
    {
        //LOGI("Host end with:%x",*url_ptr);
        if(*url_ptr == ':')   // Port exist.
        {
            *port = atoi(url_ptr + 1);

            // Point to '/' or NULL
            while(*url_ptr && *url_ptr != '/')
            {
                url_ptr++;
            }

            // "www.baidu.com:80"
            if(*url_ptr == '\0')   // No uri
            {
                if(*port == 0)
                {
                    if(*is_ssl)
                    {
                        *port = MBTK_HTTPS_PORT_DEF;
                    }
                    else
                    {
                        *port = MBTK_HTTP_PORT_DEF;
                    }
                }
                memcpy(uri,"/",1);

                LOGI("HTTP parse success:'%s','%s', %d, %d",(char*)host,(char*)uri,*port,*is_ssl);
                return 0;
            }
        }

        // "www.baidu.com/xxx" or "www.baidu.com:80/xxx"
        // Now,url_ptr point to '/'
        if(*url_ptr != '/')
        {
            LOGE("URI must start with '/'.");
            return -1;
        }

        //LOGI("URL3[%d]:%s",strlen(url_ptr),url_ptr);

        memcpy(uri,url_ptr,strlen(url_ptr));

        if(*port == 0)
        {
            if(*is_ssl)
            {
                *port = MBTK_HTTPS_PORT_DEF;
            }
            else
            {
                *port = MBTK_HTTP_PORT_DEF;
            }
        }

        LOGI("HTTP parse success:'%s','%s', %d, %d",(char*)host,(char*)uri,*port,*is_ssl);
        return 0;
    }
}

static int http_session_req_head_add(mbtk_http_session_t *session,bool replace,
                                     char *name, char *value)
{
    if(session == NULL || value == NULL)
        return -1;

    LOGI("Add request header - %s:%s",name,value);

    int i = 0;
    while(i < HTTP_REQUEST_HEADER_MAX)
    {
        if(session->req.req_h[i]
           && !strncasecmp(session->req.req_h[i]->name,name,strlen(name)))   // Is change value
        {
            break;
        }
        i++;
    }

    if(i == HTTP_REQUEST_HEADER_MAX)   // Should add new header.
    {
        i = 0;
        while(i < HTTP_REQUEST_HEADER_MAX)
        {
            if(session->req.req_h[i] == NULL)   // Find NULL request.
            {
                session->req.req_h[i] = (mbtk_http_header_t*)malloc(sizeof(mbtk_http_header_t));
                if(session->req.req_h[i] == NULL)
                {
                    LOGE("malloc() fail.");
                    return -1;
                }

                memset(session->req.req_h[i],0x0,sizeof(mbtk_http_header_t));
                memcpy(session->req.req_h[i]->name, name, strlen(name));
                session->req.req_h[i]->value = NULL;
                session->req.header_cnt++;
                break;
            }
            i++;
        }
    }
    else     // Is change value
    {
        if(!replace)
        {
            LOGW("Found this header[%s],no replace.",name);
            return 0;
        }
    }

    if(i == HTTP_REQUEST_HEADER_MAX)
    {
        LOGE("Request header is full.");
        return -1;
    }

    if(session->req.req_h[i]->value)
    {
        free(session->req.req_h[i]->value);
    }
    session->req.req_h[i]->value = (char*)malloc(strlen(value) + 1);
    if(session->req.req_h[i]->value == NULL)
    {
        LOGE("malloc() fail.");
        return -1;
    }
    memset(session->req.req_h[i]->value,0x0,strlen(value) + 1);
    memcpy(session->req.req_h[i]->value,value,strlen(value));

    return 0;
}

#if 0
static int http_session_rsp_head_add(mbtk_http_session_t *session,
                                     char *name, char *value)
{
    if(session == NULL || value == NULL)
        return -1;

    int i = 0;
    while(i < HTTP_REQUEST_HEADER_MAX)
    {
        if(session->rsp.rsp_h[i] == NULL)   // Find NULL request.
        {
            session->rsp.rsp_h[i] = (mbtk_http_header_t*)malloc(sizeof(mbtk_http_header_t));
            if(session->rsp.rsp_h[i] == NULL)
            {
                LOGE("malloc() fail.");
                return -1;
            }

            memcpy(session->rsp.rsp_h[i]->name,name,strlen(name));
            session->rsp.rsp_h[i]->value = (char*)malloc(strlen(value) + 1);
            if(session->rsp.rsp_h[i]->value == NULL)
            {
                LOGE("malloc() fail.");
                return -1;
            }
            memset(session->rsp.rsp_h[i]->value,0x0,strlen(value) + 1);
            memcpy(session->rsp.rsp_h[i]->value,value,strlen(value));

            session->rsp.header_cnt++;
            return 0;
        }
        i++;
    }

    return -1;
}
#endif

static char* http_option_str_get(mbtk_http_option_enum option)
{
    switch(option)
    {
        case HTTP_OPTION_HEAD:
            return "HEAD";
        case HTTP_OPTION_GET:
            return "GET";
        case HTTP_OPTION_POST:
            return "POST";
        case HTTP_OPTION_PUT:
            return "PUT";
        case HTTP_OPTION_DELETE:
            return "DELETE";
        case HTTP_OPTION_OPTIONS:
            return "OPTIONS";
        case HTTP_OPTION_TRACE:
            return "TRACE";
        case HTTP_OPTION_CONNECT:
            return "CONNECT";
        case HTTP_OPTION_LINK:
            return "LINK";
        case HTTP_OPTION_UNLINK:
            return "UNLINK";
        default:
            return "";
    }
}

static char* http_version_str_get(mbtk_http_version_enum version)
{
    switch(version)
    {
        case HTTP_VERSION_1_0:
            return "1.0";
        case HTTP_VERSION_1_1:
            return "1.1";
        case HTTP_VERSION_2:
            return "2";
        case HTTP_VERSION_3:
            return "3";
        default:
            return "";
    }
}

static char* http_header_find(mbtk_http_session_t *session,char* name)
{
    int i = 0;
    while(i < HTTP_REQUEST_HEADER_MAX)
    {
        if(session->req.req_h[i] &&
           !strncasecmp(session->req.req_h[i]->name,name,strlen(name)))
        {
            return session->req.req_h[i]->value;
        }

        i++;
    }
    return NULL;
}

static int http_header_str_get(mbtk_http_header_t *header,char *header_str,int header_str_len)
{
    if(header == NULL || header->value == NULL
       || header_str == NULL)
        return 0;

    int len = 0;
    len = snprintf(header_str,header_str_len,"%s: %s\r\n",
                   header->name, header->value);

    return len;
}

static mbtk_http_version_enum http_version_get_by_str(char *version_str)
{
    if(!memcmp(version_str,"1.0",3))
        return HTTP_VERSION_1_0;
    else if(!memcmp(version_str,"1.1",3))
        return HTTP_VERSION_1_1;
    else if(!memcmp(version_str,"2",1))
        return HTTP_VERSION_2;
    else if(!memcmp(version_str,"3",1))
        return HTTP_VERSION_3;
    else
        return HTTP_VERSION_1_1;
}

static int http_header_read(mbtk_http_session_t *session)
{
#define BUFFER_SIZE 2048
    char line[BUFFER_SIZE];
    char *ptr = NULL;
    int len = 0;
    while((len = mbtk_http_read_line(session->sock_fd,line,BUFFER_SIZE)) > 0)
    {
        if(!memcmp(line,"\r\n",2))
        {
            LOGD("Read empty line.");
            break;
        }

        // Delete "\r\n"
        ptr = line + len - 1; // Point to last char.
        while(http_is_space_char(*ptr))
        {
            *ptr = '\0';
            len--;
            ptr--;
        }

        LOGV("LINE:%s",line);

        if(http_handles[session->handle_id].show_rsp_header &&
           http_handles[session->handle_id].data_cb)
        {
            http_handles[session->handle_id].data_cb(session->id,
                    MBTK_HTTP_DATA_HEADER,line,len);
        }

        if(!memcmp(line,"HTTP/",5))   // "HTTP/1.1 200 OK"
        {
            session->rsp.state_code = atoi(line + 9);
            session->rsp.version = http_version_get_by_str(line + 5);
        }
        else     // Is response header item.
        {
            if(!strncasecmp(line,"Content-Length",14))
            {
                ptr = line + 14;
                while(ptr && !isdigit(*ptr))
                {
                    ptr++;
                }

                if(ptr)
                {
                    session->rsp.content_length = atol(ptr);
                }
            }
            else if(!strncasecmp(line,"Transfer-Encoding",17))
            {
                ptr = line + 17;
                while(ptr && !isalpha(*ptr))
                {
                    ptr++;
                }

                if(ptr && !memcmp(ptr,"chunked",7))
                {
                    session->rsp.is_chunked = TRUE;
                }
            }
        }
    }
#undef BUFFER_SIZE

    LOGD("RSP:HTTP/%s %d, is_chunked:%d,Content-Length:%d",http_version_str_get(session->rsp.version),
         session->rsp.state_code,session->rsp.is_chunked,session->rsp.content_length);

    return 0;
}

static int http_session_start_write(mbtk_http_session_t *session)
{
    LOGI("Start HTTP write.");

#define BUFFER_SIZE 1024
    session->state = HTTP_SESSION_STATE_WRITE_HEADER;
    char buff[BUFFER_SIZE];
    int len = 0;
    int index = 0;
    len += snprintf(buff + len,BUFFER_SIZE - len,"%s %s HTTP/%s\r\n",
                    http_option_str_get(session->option),
                    session->uri,
                    http_version_str_get(session->version));

    // if no set "Host",should set default host.
    char *host = http_header_find(session,"Host");
    if(!host)
    {
        len += snprintf(buff + len,BUFFER_SIZE - len,"Host: %s\r\n", session->host);
    }

    if(mbtk_http_write(session->sock_fd,buff,len) != len)
    {
        LOGE("mbtk_http_write() fail.");
        return -1;
    }

    char header_str[BUFFER_SIZE];
    int header_str_len = 0;
    while(index < HTTP_REQUEST_HEADER_MAX)
    {
        if(session->req.req_h[index] &&
           (header_str_len = http_header_str_get(session->req.req_h[index], header_str, BUFFER_SIZE)) > 0)
        {
            if(mbtk_http_write(session->sock_fd,header_str,header_str_len) != header_str_len)
            {
                LOGE("mbtk_http_write() fail.");
                return -1;
            }
        }
        index++;
    }

    // Write request header success.
    LOGI("HTTP write header complete.");

#undef BUFFER_SIZE

    // Write "\r\n"
    if(mbtk_http_write(session->sock_fd,"\r\n",2) != 2)
    {
        LOGE("mbtk_http_write() fail.");
        return -1;
    }

    LOGI("Start write HTTPsession->option. %d", session->option);
    if(session->option == HTTP_OPTION_POST)
    {
        session->state = HTTP_SESSION_STATE_WRITE_CONTENT;
        LOGI("Start write HTTP content data.");

        if(session->req.content && session->req.content_len > 0)
        {
            if(mbtk_http_write(session->sock_fd,session->req.content,session->req.content_len) != session->req.content_len)
            {
                LOGE("mbtk_http_write() fail.");
                return -1;
            }

            session->state = HTTP_SESSION_STATE_WRITE_END;
        }
    }
    else
    {
        session->state = HTTP_SESSION_STATE_WRITE_END;

        LOGI("HTTP write complete.");
    }
    return 0;
}

static int http_session_read_by_chunk(mbtk_http_session_t *session)
{
#undef BUFFER_SIZE
#define BUFFER_SIZE 2048
    http_chunk_code chunk_code;
    http_chunker_t chunker;
    char read_buf[BUFFER_SIZE + 1];
    int read_len = 0;
    char chunk_buf[BUFFER_SIZE + 1];
    int chunk_len;
    http_chunk_init(&chunker);
    while(TRUE)
    {
        read_len = mbtk_http_read(session->sock_fd,read_buf,BUFFER_SIZE,3000);
        //read_len = mbtk_http_read_line(session->sock_file,read_buf,BUFFER_SIZE);
        if(read_len <= 0)
        {
            LOGE("Read fail.");
            return -1;
        }

        chunk_code = http_chunk_parse(&chunker, read_buf, read_len, chunk_buf, &chunk_len);
        if(chunk_code > CHUNKE_OK)   // Fail.
        {
            LOGE("http_chunk_parse() fail[err - %d].",chunk_code);
            return -1;
        }

        LOGD("Read chunk_len:%d",chunk_len);
        chunk_buf[chunk_len] = '\0';

        if(http_handles[session->handle_id].data_cb)
            http_handles[session->handle_id].data_cb(session->id,
                    MBTK_HTTP_DATA_CONTENT,chunk_buf,chunk_len);

        if(CHUNKE_STOP == chunk_code)
        {
            if(http_handles[session->handle_id].data_cb)
                http_handles[session->handle_id].data_cb(session->id,
                        MBTK_HTTP_DATA_COMPLETE,NULL,0);

            break;
        }
    }

    LOGV("Chunk read success.");

    return 0;
}

static int http_session_read_by_length(mbtk_http_session_t *session)
{
#undef BUFFER_SIZE
#define BUFFER_SIZE 2048
    char read_buf[BUFFER_SIZE + 1];
    int read_len = 0;
    int64 read_count = 0;
    while(TRUE)
    {
        memset(read_buf,0x0,BUFFER_SIZE + 1);
        read_len = mbtk_http_read(session->sock_fd,read_buf,BUFFER_SIZE,3000);
        if(read_len <= 0)
        {
            LOGE("Read fail.");
            return -1;
        }


        if(read_count + read_len >= session->rsp.content_length)   // Read data complete.
        {
            if(http_handles[session->handle_id].data_cb)
            {
                http_handles[session->handle_id].data_cb(session->id,
                        MBTK_HTTP_DATA_CONTENT,read_buf,session->rsp.content_length - read_count);

                http_handles[session->handle_id].data_cb(session->id,
                        MBTK_HTTP_DATA_COMPLETE,NULL,0);
            }
            break;
        }

        if(http_handles[session->handle_id].data_cb)
            http_handles[session->handle_id].data_cb(session->id,
                    MBTK_HTTP_DATA_CONTENT,read_buf,read_len);

        read_count += read_len;
    }

    return 0;
}

static int http_session_read_by_general(mbtk_http_session_t *session)
{
#undef BUFFER_SIZE
#define BUFFER_SIZE 2048
    char read_buf[BUFFER_SIZE + 1];
    int read_len = 0;
    while(TRUE)
    {
        read_len = mbtk_http_read(session->sock_fd,read_buf,BUFFER_SIZE,1000);
        if(read_len <= 0)
        {
            if(read_len == -2 || read_len == 0) // Timeout or end
                break;

            LOGW("Read end[read_len - %d].",read_len);
            //return -1;
            break;
        }

        read_buf[read_len] = '\0';

        if(http_handles[session->handle_id].data_cb)
            http_handles[session->handle_id].data_cb(session->id,
                    MBTK_HTTP_DATA_CONTENT,read_buf,read_len);
    }

    if(http_handles[session->handle_id].data_cb)
        http_handles[session->handle_id].data_cb(session->id,
                MBTK_HTTP_DATA_COMPLETE,NULL,0);


    return 0;
}

static int http_session_start_read(mbtk_http_session_t *session)
{
    LOGI("Start HTTP read.");
    int result = 0;
//    usleep(500000);
    session->state = HTTP_SESSION_STATE_READ_HEADER;
    if(http_header_read(session))
    {
        result = -1;
        goto read_end;
    }

    if(session->option != HTTP_OPTION_HEAD)
    {
        session->state = HTTP_SESSION_STATE_READ_CONTENT;
        if(session->rsp.is_chunked)
        {
            if(http_session_read_by_chunk(session))
            {
            	LOGE("http_session_read_by_chunk fail.");
                result = -1;
                goto read_end;
            }
        }
        else if(session->rsp.content_length > 0)
        {
            if(http_session_read_by_length(session))
            {
            	LOGE("http_session_read_by_length fail.");
                result = -1;
                goto read_end;
            }
        }
        else
        {
            if(http_session_read_by_general(session))
            {
            	LOGE("http_session_read_by_general fail.");
                result = -1;
                goto read_end;
            }
        }
    }
    else
    {
        if(http_handles[session->handle_id].data_cb)
            http_handles[session->handle_id].data_cb(session->id,
                    MBTK_HTTP_DATA_COMPLETE,NULL,0);
    }

read_end:
    session->state = HTTP_SESSION_STATE_READ_END;

    LOGI("HTTP request complete[result - %d].",result);
    if(http_session_close(session))
    {
        return -1;
    }

#if 0
    // Free session after HTTP request complete.
    http_session_free(session);
    http_handles[handle_id].session[session_id] = NULL;
    http_handles[handle_id].session_cnt--;
#endif

    return result;
}

static bool http_session_req_check(mbtk_http_session_t *session)
{
    if(session == NULL || session->port == 0 ||
       strlen(session->host) == 0)
    {
        LOGE("Session not set host or port.");
        return FALSE;
    }

    if(session->option != HTTP_OPTION_HEAD &&
       session->option != HTTP_OPTION_POST &&
       session->option != HTTP_OPTION_GET)
    {
        LOGE("Only support HEAD/GET/POST");
        return FALSE;
    }

#if 0
    if(session->version != HTTP_VERSION_1_0 &&
       session->version != HTTP_VERSION_1_1)
    {
        LOGE("Only support HTTP 1.0/1.1");
        return FALSE;
    }
#endif

    if(session->option == HTTP_OPTION_POST)
    {
        char *value = NULL;
        value = http_header_find(session, "Content-Length");
        if(!value)
        {
            LOGE("POST must set 'Content-Length'");
            return FALSE;
        }
        if(session->req.content_len != atoi(value))
        {
            LOGE("POST 'Content-Length' error.");
            return FALSE;
        }

        value = http_header_find(session, "Content-Type");
        if(!value)
        {
            LOGE("POST must set 'Content-Type'");
            return FALSE;
        }
    }

    return TRUE;
}

/*************************************************************
    Public Function Definitions
*************************************************************/
int mbtk_http_handle_get(bool show_rsp_header,mbtk_http_data_callback_func data_cb)
{
    int index = 0;
    int i = 0;
    for(; index < HTTP_HANDLE_MAX; index++)
    {
        if(http_handles[index].id < 0)   // Find free handle
        {
            break;
        }
    }

    if(index == HTTP_HANDLE_MAX)
    {
        LOGE("HTTP Handle is full.");
        return -1;
    }

    memset(&(http_handles[index]),0x0,sizeof(mbtk_http_handle_t));
    http_handles[index].id = index;
    http_handles[index].show_rsp_header = show_rsp_header;
    http_handles[index].data_cb = data_cb;
    http_handles[index].session_cnt = 0;
    for(i = 0; i < HTTP_SESSION_MAX; i++)
    {
        http_handles[index].session[i] = NULL;
    }

    if(mbtk_http_init())
    {
        LOGE("mbtk_http_init() fail.");
        return -1;
    }

    return http_handles[index].id;
}

int mbtk_http_handle_free(int handle_id)
{
    int i = 0;
    if(!http_handle_check(handle_id))
    {
        LOGE("Handle error.");
        return -1;
    }

    http_handles[handle_id].id = -1;
    http_handles[handle_id].data_cb = NULL;
    if(http_handles[handle_id].session_cnt > 0)
    {
        for(i = 0; i < HTTP_SESSION_MAX; i++)
        {
            if(http_handles[handle_id].session[i] != NULL)
            {
                if(http_handles[handle_id].session[i]->state != HTTP_SESSION_STATE_NON)
                {
                    if(http_session_close(http_handles[handle_id].session[i]))
                    {
                        return -1;
                    }
                }

                http_session_free(http_handles[handle_id].session[i]);
                http_handles[handle_id].session[i] = NULL;
            }
        }

        http_handles[handle_id].session_cnt = 0;
    }

    if(mbtk_http_deinit())
    {
        LOGE("mbtk_http_deinit() fail.");
        return -1;
    }

    return 0;
}

int mbtk_http_session_create(int handle_id, mbtk_http_option_enum option,
                             mbtk_http_version_enum version)
{
    int handle_index = 0;
    int session_index = 0;
    if(!http_handle_check(handle_id))
    {
        LOGE("Handle error.");
        return -1;
    }

    for(; handle_index < HTTP_HANDLE_MAX; handle_index++)
    {
        if(http_handles[handle_index].id == handle_id)   // Find handle
        {
            break;
        }
    }

    if(handle_index == HTTP_HANDLE_MAX)
    {
        LOGE("No found handle[handle - %d].",handle_id);
        return -1;
    }

    if(http_handles[handle_index].session_cnt >= HTTP_SESSION_MAX)
    {
        LOGE("Session is full.");
        return -1;
    }

    for(; session_index < HTTP_SESSION_MAX; session_index++)
    {
        if(http_handles[handle_index].session[session_index] == NULL)   // Find first NULL session
        {
            break;
        }
    }

    if(session_index == HTTP_SESSION_MAX)
    {
        LOGE("Session is full.");
        return -1;
    }

    mbtk_http_session_t* session = (mbtk_http_session_t*)malloc(sizeof(mbtk_http_session_t));
    if(session == NULL)
    {
        LOGE("malloc() fail.");
        return -1;
    }
    memset(session,0x0,sizeof(mbtk_http_session_t));
    session->sock_fd = -1;
    session->file_fd = -1;
    session->handle_id = handle_id;
    session->id = session_index;
    session->state = HTTP_SESSION_STATE_NON;
    session->is_ssl = FALSE;
    session->ingnore_cert = TRUE;
    session->version = version;
    session->option = option;
    session->req.content_len = 0;
    session->req.content_len_send = 0;
    session->rsp.is_chunked = FALSE;
    session->rsp.content_length = 0;
    session->rsp.header_cnt = 0;
    http_handles[handle_index].session[session_index] = session;
    http_handles[handle_index].session_cnt++;

    return session->id;
}

int mbtk_http_session_option_reset(int handle_id, int session_id, mbtk_http_option_enum option)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];
    if(session->state != HTTP_SESSION_STATE_NON)
    {
        LOGE("Session state error.[%d]",session->state);
        return -1;
    }

    session->option = option;
    return 0;
}


int mbtk_http_session_ingnore_cert_set(int handle_id, int session_id, bool ingnore_cert)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];

    session->ingnore_cert = ingnore_cert;

    LOGE("session->ingnore_cert:%d, ingnore_cert:%d\n", session->ingnore_cert, ingnore_cert);
    return 0;
}


int mbtk_http_session_free(int handle_id,int session_id)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];
    if(session->state != HTTP_SESSION_STATE_NON)
    {
        if(http_session_close(session))
        {
            return -1;
        }
    }

    http_session_free(session);
    http_handles[handle_id].session[session_id] = NULL;
    http_handles[handle_id].session_cnt--;
    return 0;
}

int mbtk_http_session_url_set(int handle_id,int session_id,void *url)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];
    if(session->state == HTTP_SESSION_STATE_NON)
        return http_url_parse(url, session->host,session->uri,&(session->port),&(session->is_ssl));
    else
    {
        LOGE("Currenr session is process[state - %d].",session->state);
        return -1;
    }
}

int mbtk_http_session_head_add(int handle_id,int session_id,
                               char *name, char *value)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    if(http_str_empty(name) || http_str_empty(value))
    {
        LOGE("Param error.");
        return -1;
    }

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];
    if(session->state == HTTP_SESSION_STATE_NON)
    {
        int result = http_session_req_head_add(session,TRUE,name,value);
        if(!result && !strncasecmp(name,"Content-Length",14))
        {
            session->req.content_len = atoi(value);
        }
        return result;
    }
    else
    {
        LOGE("Currenr session is process[state - %d].",session->state);
        return -1;
    }
}

int mbtk_http_session_content_set(int handle_id,int session_id,
                                  char *content,uint32 content_len)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    if(content_len <= 0 || content_len > HTTP_CONTENT_LEN_MAX)
    {
        LOGE("Content lenght error[%d].",content_len);
        return -1;
    }

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];
    if(session->state == HTTP_SESSION_STATE_NON)
    {
        if(session->option != HTTP_OPTION_POST)
        {
            LOGE("Content only for post.");
            return -1;
        }

        if(session->req.content)
        {
            free(session->req.content);
            session->req.content_len = 0;
        }

        session->req.content = (char*)malloc(content_len);
        if(session->req.content == NULL)
        {
            LOGE("malloc() fail.");
            return -1;
        }

        char *content_type = NULL;
        if(strlen(content) == content_len)   //
        {
            content_type = "text/plain";
        }
        else
        {
            content_type = "application/octet-stream";
        }

        if(http_session_req_head_add(session, FALSE, "Content-Type", content_type))
        {
            LOGE("Set 'Content-Type' fail.");
            return -1;
        }

        memcpy(session->req.content,content,content_len);
        session->req.content_len = content_len;

        char len_str[20] = {0};
        snprintf(len_str,20,"%d",content_len);
        if(http_session_req_head_add(session,FALSE,"Content-Length",len_str))
        {
            LOGE("Set 'Content-Length' fail.");
            return -1;
        }


        return 0;
    }
    else
    {
        LOGE("Currenr session is process[state - %d].",session->state);
        return -1;
    }
}

int mbtk_http_session_start(int handle_id,int session_id)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];
    if(session->state == HTTP_SESSION_STATE_NON)
    {
        if(!http_session_req_check(session))
        {
            LOGE("http_session_req_check() fail.");
            return -1;
        }

        // Must set "Connection" for post.
        if(session->option == HTTP_OPTION_POST)
        {
            if(http_session_req_head_add(session,FALSE,"Connection","KeepAlive"))
            {
                LOGE("Set 'Content-Length' fail.");
                return -1;
            }
        }

        LOGI("HTTP request start.");
        LOGI("host:%s, port:%d, uri:%s",session->host,session->port,session->uri);
        LOGI("is_ssl:%d,ingnore_cert:%d, version:%d, option:%d, content_len:%d",session->is_ssl,
            session->ingnore_cert, session->version,session->option,session->req.content_len);

        int sock_fd = mbtk_http_open(session->is_ssl,session->ingnore_cert,session->host,session->port);

        if(sock_fd < 0)
        {
            LOGE("mbtk_http_open() fail.");
            return -1;
        }
        session->sock_fd = sock_fd;
//        int fd = mbtk_sock_fd_get(sock_fd);
//        if(fd < 0) {
//            LOGE("mbtk_sock_fd_get() fail.");
//            return -1;
//        }
        // session->sock_file = fdopen(sock_fd,"r");
        session->state = HTTP_SESSION_STATE_CONN;

//        if(!session->sock_file) {
//            LOGE("fdopen() fail.");
//            return -1;
//        }

        LOGI("HTTP connected.");

        if(http_session_start_write(session))
        {
            return -1;
        }

        if(session->state == HTTP_SESSION_STATE_WRITE_END)
        {
            if(http_session_start_read(session))
            {
                return -1;
            }
        }
        else
        {
            LOGI("Waitting post content data...");
        }

        return 0;
    }
    else
    {
        LOGE("Currenr session is process[state - %d].",session->state);
        return -1;
    }
}

int mbtk_http_session_content_send(int handle_id,int session_id,
                                   char *data,int data_len)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return -1;
    }

    if(data_len <= 0 || data_len > HTTP_CONTENT_LEN_MAX)
    {
        LOGE("Content lenght error[%d].",data_len);
        return -1;
    }

    LOGV("Post send:%d - %s",data_len,data);

    mbtk_http_session_t *session = http_handles[handle_id].session[session_id];
    if(session->state == HTTP_SESSION_STATE_WRITE_CONTENT)
    {
        if(session->option != HTTP_OPTION_POST)
        {
            LOGE("Content only for post.");
            return -1;
        }

        if(session->req.content || session->req.content_len <= 0)
        {
            LOGE("This post not spit package.");
            return -1;
        }

        // Discard excess data.
        if(session->req.content_len_send + data_len > session->req.content_len)
            data_len = session->req.content_len - session->req.content_len_send;

        if(data_len != mbtk_http_write(session->sock_fd,data,data_len))
        {
            return -1;
        }

        session->req.content_len_send += data_len;

        LOGI("HTTP post data send: %d / %d",session->req.content_len_send,
             session->req.content_len);

        // Post data send complete.
        if(session->req.content_len_send >= session->req.content_len)
        {
            session->state = HTTP_SESSION_STATE_WRITE_END;

            LOGI("HTTP write complete.");
            if(http_session_start_read(session))
            {
                return -1;
            }
        }

        return 0;
    }
    else
    {
        LOGE("Currenr session state error[%d].",session->state);
        return -1;
    }
}

const mbtk_http_session_t* mbtk_http_session_get(int handle_id,int session_id)
{
    if(!http_session_check(handle_id,session_id))
    {
        LOGE("Session error.");
        return NULL;
    }

    return http_handles[handle_id].session[session_id];
}

void mbtk_http_lib_info_print()
{
    MBTK_SOURCE_INFO_PRINT("mbtk_http_lib");
}